Vanikoropsis sp.
From the collection of Yale Peabody Museum. Free to download, adapt and use — no permission needed.
Geological context: Late Cretaceous, Fox Hills Fm, Timber Lake Mbr. Collection locality: cut on E side of county road connecting SD Rt. 65 and Bullhead, near top of the hill 1 mi NW of Bullhead, Corson County, South Dakota, USA. Collected by Karl M. Waage, Ian G. Speden, Erica W. Speden, 1962/1963. IP number 612758; lot count 1; accn=IPA.07048; associatedwith=IP.612845,IP.612846,IP.612847,IP.612848,IP.612849,IP.612850,IP.612851,IP.612852,IP.612853,IP.612854,IP.612855,IP.612856,IP.612859,IP.612860,IP.612857,IP.612838,IP.612841,IP.612842,IP.612843,IP.612844,IP.612858,IP.612861,IP.612862,IP.612863,IP.612864,IP.612865,IP.612866,IP.612867,IP.612868,IP.612869,IP.612870,IP.612871,IP.612872,IP.612873,IP.612874,IP.612875.
Yale Peabody Museum’s own description